Kinescope socket

ABSTRACT

A kinescope socket includes two sections secured together by conductive connectors, with keyhole openings in each of the sections in alignment. A portion of each conductive connector is held captive within one of a plurality of kinescope pin receptacles in the first section. The other section has a conductive pattern on one of its surfaces. The pattern includes conductive pads electrically connected to pins of a kinescope when inserted into the kinescope pin receptacles by a second portion of the conductive connector. The second portion passes through the two sections and is connected by a conductive strap to the first portion. The conductive pattern also includes a conductive area adjacent to, but separated from, the conductive pads to provide an arc gap therebetween.

I United States Patent [151 3,668,475 Owens et al. [451 June 6, 1972[54] KINESCOPE SOCKET [72] Inventors: Raymond Clyde Owens, Carmel;Lucius is; e] m an Ponder Thomas, Indianapolis, both of lnd. AnomeyEugene whim:re [73] Assignee: RCA Corporation 57 ABSTRACT [22] Filed:Dec. 24, 1970 l 1 A kinescope socket includes two sections securedtogether by PP N05 101,357 conductive connectors, with keyhole openingsin each of the sections in alignment. A portion of each conductiveconnector 52 U.S. Cl. ..3l7/61.5 339 194 R is held captive withinPlurality fkinescpe recep- [51] Int. Cl. .H02h l/04 tacles in the firstSection The other section has a conductive 58 Field of Search ..339/l43"r 194 R- 313/325 Patter" surfaes- The includ 3133/53]. 3117/61 padselectrically connected to pins of a kinescope when inv serted into thekinescope pin receptacles by a second portion [56] References Cited ofthe conductive connector. The second portion passes through the twosections and is connected by a conductive UNITED STATES PATENTS strap tothe first portion. The conductive pattern also includes i a conductivearea adjacent to, but separated from, the con- 1 i flelmomas 1 iiductive pads to provide an arc gap therebetween. an 2,914,254 11/1959Lehman ..339/l43 T I 15 Claims, 8 Drawing Figures PATENTEDJUH 81972SHEET 10F 2 Fig. 1.

- 1 v I v V W hen MUM Fig. 5. Es

IN VE N TOPS T Raymond C. Owens I and Lucius P. Thomas.

ATTORNEY PATENTEnJun 6 m2 3.668.475

I SHEET 2 BF 2 IN VE' N T095.

Raymond C. Owens and Lucius P. Thomas A TTORNE Y 1 KINESCOPE SOCKET Thepresent invention pertains to kinescope sockets and more particularly tokinescope sockets of the type which include spark gaps. 1

Operating conditions within kinescopes occasionally cause arcing acrosshigh voltage components within the tube. The current resulting from thearcing, where no protection is afforded, can be conducted through thekinescope socket terminals and lead wires to other components connectedto the kinescope. Consequently, spark gaps are often connected to thekinescope pins to provide an alternate low impedance path to divert thecurrent associated with the high voltage away from the components. Thesespark gaps have been located either on the chassis itself or in thekinescope socket itself.

Known kinescope sockets which include spark gaps consist of severalcomponents which must be assembled and are, thus, costly to manufacture.This is particularly undesirable where the kinescope socket is used in atelevision receiver because of the competitive nature of mass-producedconsumer electronics products.

It is the object of the present invention to provide a televisionreceiver kinescope socket which includes spark gaps and is low in costand simple in construction.

In accordance with the present invention, a kinescope socket includestwo sections, each having a keyhole aperture. One section has aplurality of kinescope pin receptacles, and the second section has aconductive pattern on one of its surfaces. The pattern includesconductive pads adapted to be connected to the pins of a kinescopeinserted within the pin receptacles and a conductive area adjacent toand separated from the conductive pads to form an arc gap therebetween.Means secure the two sections together with both keyhole apertures inalignment.

A complete understanding of the present invention may be obtained fromthe following detailed description of a specific embodiment thereof,when taken in'conjunction with the accompanying drawings, in which:

FIG. 1 is a side elevation view of a television receiver chassis andkinescope connected by means of a kinescope socket embodying the presentinvention; I

FIG. 2 is a partial exploded perspective view of the kinescope andkinescope socket shown in FIG. 1; v

, FIG. 3 is a left side view of the first section of the kinescopesocket of FIG. 2; v j 1 FIG. 4 is a left side view of a second sectionof the socket of FIG. 2

tern;

FIG. 5 is a partial section view of the kinescope socket taken along thelines 5-5 in FIG. 1 to show certain details in kinescope showing theconductive printed circuit patconstruction of the socket connectors withthe mating portions of the kinescope shown in phantom;

FIG. 6 is a partial exploded perspective view of an alternate embodimentof the kinescope socket shown in FIG. 1 wherein the circuit componentsof the television on the socket second section; 7

FIG. 7 is a left side view of the first section of the kinescope socketof FIG. 6; and

FIG. 8 is a left side view of the second section of the kinescope socketof FIG. 6 showing the conductive printed circuit pattern.

receiver are mounted For the sake of clarity, the reference numerals areapplied,

in the several FIGURES, where a plurality of identical socket structuresare shown, to only one or a few of the identical structures. Referringnow to FIGS. l-5 generally, a television receiver 12 includes a chassis14, such as the KCS-l84 shown in RCA Service Data File 1970 No. T13,having the television signal processing and deflection generatingcircuitry. A television receiver kinescope 16, such as the 19VAJP4 shownin the Service Data, is electrically connected to the chassis 14 bymeans of a kinescope socket assembly 18 and the wires of a wiringharness 20. The kinescope 16 is physically secured to thechassis 14 by akinescope mount 22 which is electrically connected to the chassis groundor reference potential. The

Service Data may be obtained from RCA Corporation, 600 North ShermanDrive, Indianapolis, Indiana 46206.

The socket 18 includes a first section 24 and a second section 26 whichare fabricated from an electrical insulating material such as phenolic.The sections 24 and 26 are axially aligned and include a centralaperture 28 with a keyhole slot 30. The keyhole slot 30 cooperates withthe kinescope key 32 to align the kinescope pins 34 with the kinescopepin receiving holes 36. Each of the pin receiving holes is formed aspart of an electrical conductive connector which serves severalpurposes. Firstly, the conductive connectors receive and areelectrically connected to the pins 34 of the television receiverkinescope 16. The conductive connectors also physically secure thesections 24 and 26 together. Additionally, the conductive connectorsprovide a convenient physical support and electrical connection for thewires of the wiring harness 20. Finally, the conductive connectorselectrically couple the kinescope pins 34 to the protective spark gaps.

Reference is now made to FIG. 5 which shows the detailed construction ofa connector 40 receiving a kinescope pin 42 which is shown in phantomand a wire 44. The connector 40 includes two main portions, a circularportion 46 which is the female receptacle for the kinescope pin 42 andan elongated tubular portion 48. These portions are connected by aconductive strap 50 and are secured to the kinescope socket section 24by means of a tab 52. The elongated tubular portion 48 extends from thesurface 54 of the section 24 through the sections 24 and 26 to a pointbeyond the surface 56 of the section 26. The tubular portion 48 has aflange 58 which engages a copper conductive printed circuit pad 60 onthe surface 56. Because of the dimensions, the flange 58 biases thesections 24 and 26 toward each other; however, the sections aremaintained in a slightly separated position by virtue of the tab 52.

The conductive pad 60, as is best shown in FIG. 4, is positioned on thesection 26 adjacent to, but not touching, a printed circuit conductivering 64 which is on the surface 56 of the section 26. The elongatedtubular portion 48 mates with and is the female receptacle for the wires44 of the wiring harness 20. The wire 44 is secured in the tubularportion 48 by virtue of solder 66 which fills a portion of the spacewithin the tubular portion 48 around the wire 44. The solder flows intothe tubular portion 48 to electrically connect the tubular portion tothe wire 44, as shown in FIG. 2, because the tubular portion is slotted.It should be noted that during fabrication, the socket 18 sectionsurface 56 is passed through a solder bath at which time a soldercoating adheres to all the conductive portions of the socket and lockthe sections 24 and 26 together. Thus, the entire exterior of thetubular portion 48 is covered or coated with the solder 66 which alsoextends onto and covers the conductive printed circuit pad 60 and ring64. Similarly, the entire conductive printed circuit pattern is coatedwith the solder 66. Because the conductive connector portion 46 does notextend beyond the surface 25 of section 26, the solder from the solderbath does not flow into the pin receiving holes 36 which could obstructthe insertion of the kinescope pins. Thus, the socket 18 is particularlysuitable for mass production techniques.

Referring now to FIG. 4 which shows a printed circuit pattern on thesurface 56 of the section 26, at the center of the section is theaperture 28 with the keyhole slot 30. Concentric to the aperture 28 area series of smaller apertures 70 which receive the circular portion 46of a connector. Adjacent to the apertures 70 and concentric with theaperture 28 are another series of apertures 72. A conductive printedcircuit pad surrounds each of the apertures 72. An aperture 74 isprovided within the conductive printed circuit ring 64 so that the ringcan be electrically connected to ground via one of the wires of thewiring harness 20. Additionally, the conductive printed circuit ring 64is connected to ground by a heavy conductive strap 77 (FIG. 1) connectedto the kinescope mount 22. Certain ones of the conductive printedcircuit pads which are associated with pins of the kinescope which areparticularly subject to arcing, have a heart shaped form with the apexpointed g 3 toward the conductive ring 64. Whenever a high voltage ofsufficient magnitude occurs, arcing will take place from the apex of theprinted circuit pad to the conductive ring which is grounded.

In certain applications, it may be desirable to have isolating resistorsin series with the wires of the wiring harness 20. In such case, asshown in FIG. 2, a resistor 76 which is encased in an insulative tubularmember 78 has one of its wires or leads 44 inserted into and soldered inthe tubular portion of the connector (FIG. The other wire or lead 80 ofthe resistor 76 is soldered to one of the wires 82 of thewiring harness20. It should be noted that several connectors are shown which do nothave wires attached to them. This is for the sake of clarity to permit aclearer understanding of the construction of the connector. g Referringnow to FIGS. 6-8 where similar reference numerals designate similarcomponents shown in FIGS. l-S, the first section 24 can be used inconjunction with another second section 84 which is substantially largerthan the section 26. The section 84 is of sufficient size to pennitmounting chassis circuit components. Thus, isolation resistors 86 whichare electrically connected in series with certain of the leads of thewiring harness 20 are mounted on the section 84. The resistors aremounted with the resistor body resting on the surface 88 of the sectionover a slot 90. The slot is provided to increase the dielectric betweenthe ends of the resistor 86 to inhibit arcing across theresistor.

As is shown inFlG. 8, the leads of the resistors 86 pass through thesection 84 and emerge in conductive printed circuit pads on the surface92 of the section 84. Where this occurs, to provide room for theconnection of the resistor lead, the conductive pad may be elongated topermit the connection at a point away from the apex of the conductivepad which is adjacent to, but separated from, the conductive ring 64. Inthose instances where an isolating resistor is mounted on the conductivepattern, the wire of the wiring harness is not directly connected to theconnector 40 butto a conductive printed circuit pattern on the surface92 of the section 84. For example, the wire 96 of the wiring harness 20is electrically connected to a conductive pattern 98 on the surface 92.One of the leads 100 of a resistor 86 is also connected to theconductive pattern 98. The other resistor lead 102 is connected to theconductive pad 104 at a point away from the apex of the pattern.The'conductive pad, similar to the socket shown in FIGS. 1-5, isconnected to the tubular portion 48 of the connector which iselectrically coupled via the strap 50 and the circular portion 46 to themating pin of the kinescope. Because the conductive portion 46 does notextend beyond the socket section 24, during fabrication, the solder fromthe solder bath will not flow into the pin receiving holes 36 whichcould obstruct the insertion of the kinescope pins. The sections 24 and84 are locked together by the solder which coats all exposed conductiveareas on surface 92 of section 84.

In those cases where an isolating resistor is not required, the wire canbe connected in a manner similar to that described in connection withFIG. 5. Thus, the wires 106 and 108 of the wiring harness 20 areinserted into and soldered in the tubular portion 48 of the connector40. It should be noted that where desirable a decoupling inductor suchas inductor 110 may be mounted on the socket section 24 and electricallyconnected in a manner similar to the isolating resistors 86.

What is claimed is:

l. A kinescope socket comprising: a first section having a keyholeaperture and a plurality of kinescope pin receiving openings; a sectionsection having a conductive printed circuit pattern on one of itssurfaces and a keyhole aperture, said'conductive printed circuit patternincluding conductive pads adapted to be electrically connected to thepins of a kinescope inserted into said pin receptacles and a conductivearea adjacent to and separated from said conductive pads to provide anarc gap therebetween; and means securing said first section keyholeaperture and said second section keyhole aperture in all ment.

A kinescope socket comprising: a first section having a keyhole apertureand a plurality of kinescope pin openings; a second section having aconductive pattern on one of its surfaces and a keyhole aperture, saidconductive pattern including conductive pads adapted to be electricallyconnected to the pins of a kinescope inserted into said pin receptaclesand a conductive area adjacent to and separated from said conductivepads to provide an arc gap therebetween; and means securing said firstsection keyhole aperture and said second section keyhole aperture inalignment, said means for securing including conductive connectorshaving a first portion which mates with the pins of said kinescope, apart of said first portion held captive within said first section pinreceiving opening, and a second portion mounted to pass through saidfirst section and electrically connected to the conductive pattern onsaid section section.

3. A kinescope socket as defined in claim 1 wherein all the exposedconductive parts of said socket on said conductive pattern side of saidsecond section are coated with a layer of conductive material.

4. A kinescope socket as defined in claim 2 wherein the second portionof said conductive connectors project beyond the conductive pattern sideof said second section, and are coated with said conductive materialsuch that said first and said second section are locked together.

5. A kinescope socket as defined in claim 4 wherein said conductivematerial is solder.

6. A kinescope socket as defined in claim 2 including a plurality ofwires, each wire coupled to one of said conductive connectors.

7. A kinescope socket as defined in claim 6 wherein said wires arecoupled to said connector second portion.

8. A kinescope socket as defined in claim 3 including electriccomponents mounted on said second section and electrically connected tothe conductive pattern on said second section by said conductivematerial.

9. A kinescope socket as defined in claim 8 wherein said electriccomponents are connected in series with a wire connected to signalprocessing circuits remote from said kinescope socket.

10. A kinescope socket as defined in claim 9 wherein said electriccomponents are isolating resistors.

11. A kinescope socket as defined in claim 9 wherein said electriccomponents are isolating inductors.

12. In a kinescope socket having spaced kinescope pin receiving contactterminal means therein to receive the terminal pins of a kinescope, astructure comprising: a conductive printed circuit pattern mounted on asingle insulating socket member, said pattern including a plurality ofconductive pads electrically connected to the pins of said kinescope; aconductive area adjacent to and spaced apart from said conductive pads;said conductive area electrically connected to a fixed referencepotential; and said conductive pads and'conductive area cooperating toform an arc gap.

13. A structure as defined in claim 12 wherein said insulating socketmember includes a keyhole aperture adapted to cooperate with a key onsaid kinescope, and said plurality of conductive pads are positioned onsaid insulative member substantially concentric with said aperture.

14. A structure as defined in claim 13 including a second insulatingsocket member having a keyhole aperture aligned with said firstinsulating socket member keyhole aperture; and said spaced kinescope pinreceiving contact terminal means mounted to said second insulatingsocket member.

. 15. A structure as defined in claim 13 wherein said conductive area isdisposed on said first insulating socket member to encircle said keyholeaperture and said plurality of conductive pads.

as irin:

Disclaimer 3,668, 17 5.Ra3 m0nd CLyde Owens, Carmel, and Lucius PonderIndianapolis, Ind. KINESCOPE SOCKET. Patent dated June 6,

1972. Disclaimer filed Sept. 23, 1976, by the assignee, RCA Corporation.

Hereby enters this disclaimer to claims 12, 13 and 15 of said patent.

[Oyficz'al Gazette November 23, 1976.]

Thomas,

Disclaimer 3,668,475.Raym0nd Clyde Owens, Carmel, and Lucius Fonda?"Thomas, Indianapolis, Ind. KINESCOPE SOCKET. Patent dated June 6, 1972.Disclaimer filed Sept. 23, 1976, by the assignee, BOA Oomomtz'on. Herebyenters this disclaimer to claims 12, 13 and 15 of said patent.

[Oficial Gazette November 23, 1.976.]

1. A kinescope socket comprising: a first section having a keyholeaperture and a plurality of kinescope pin receiving openings; a sectionsection having a conductive printed circuit pattern on one of itssurfaces and a keyhole aperture, said conductive printed circuit patternincluding conductive pads adapted to be electrically connected to thepins of a kinescope inserted into said pin receptacles and a conductivearea adjacent to and separated from said conductive pads to provide anarc gap therebetween; and means securing said first section keyholeaperture and said second section keyhole aperture in alignment.
 2. Akinescope socket comprising: a first section having a keyhole apertureand a plurality of kinescope pin openings; a second section having aconductive pattern on one of its surfaces and a keyhole aperture, saidconductive pattern including conductive pads adapted to be electricallyconnected to the pins of a kinescope inserted into said pin receptaclesand a conductive area adjacent to and separated from said conductivepads to provide an arc gap therebetween; and means securing said firstsection keyhole aperture and said second section keyhole aperture inalignment, said means for securing including conductive connectorshaving a first portion which mates with the pins of said kinescope, apart of said first portion held captive within said first section pinreceiving opening, and a second portion mounted to pass through saidfirst section and electrically connected to the conductive pattern onsaid section section.
 3. A kinescope socket as defined in claim 1wherein all the exposed conductive parts of said socket on saidconductive pattern side of said second section are coated with a layerof conductive material.
 4. A kinescope socket as defined in claim 2wherein the second portion of said conductive connectors project beyondthe conductive pattern side of said second section, and are coated withsaid conductive material such that said first and said second sectionare locked together.
 5. A kinescope socket as defined in claim 4 whereinsaid conductive material is solder.
 6. A kinescope socket as defined inclaim 2 including a plurality of wires, each wire coupled to one of saidconductive connectors.
 7. A kinescope socket as defined in claim 6wherein said wires are coupled to said connector second portion.
 8. Akinescope socket as defined in claim 3 including electric componentsmounted on said second section and electrically connected to theconductive pattern on said second section by said conductive material.9. A kinescope socket as defined in claim 8 wherein said electriccomponents are connected in series with a wire connected to signalprocessing circuits remote from said kinescope socket.
 10. A kinescopesocket as defined in claim 9 wherein said electric components areisolating resistors.
 11. A kinescope socket as defined in claim 9wherein said electric components are isolating inductors.
 12. In akinescope socket having spaced kinescope pin receiving contact terminalmeans therein to receive the terminal pins of a kinescope, a structurecomprising: a conductive printed circuit pattern mounted on a singleinsulating socket member, said pattern including a plurality ofconductive pads electrically connected to the pins of said kinescope; aconductive area adjacent to and spaced apart from said conductive pads;said conductive area electrically connected to a fixed referencepotential; and said conductive pads and conductive area cooperating toform an arc gap.
 13. A structure as defined in claim 12 wherein saidinsulating socket member includes a keyhole aperture adapted tocooperate with a key on said kinescope, and said plurality of conductivepads are positioned on said insulative member substantially concentricwith said aperture.
 14. A structure as defined in claim 13 including asecond insulating socket member having a keyhole aperture aligned withsaid first insulating socket member keyhole aperture; and said spacedkinescope pin receiving contact terminal means mounted to said secondinsulating socket member.
 15. A structure as defined in claim 13 whereinsaid conductive area is disposed on said first insulating socket memberto encircle said keyhole aperture and said plurality of conductive pads.